/*
 * Copyright [2013-2021], Alibaba Group Holding Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.polardbx.manager.response;

/**
 * 暂时不支持的语句
 *
 * @author arnkore 2016-12-27 19:37
 */
public class NonsupportedStatement extends SingleColumnSimpleSelect {
    private String statement;

    public NonsupportedStatement(String origColumnName, String aliasColumnName) {
        super(origColumnName, aliasColumnName);
    }

    public NonsupportedStatement(String origColumnName) {
        super(origColumnName);
    }

    public NonsupportedStatement(String statement, String origColumnName, String aliasColumnName) {
        super(origColumnName, aliasColumnName);
        this.statement = statement;
    }

    @Override
    protected void initFields(byte packetId) {
    }

    @Override
    protected void initRowData(String resultCharset) {
    }

    @Override
    public String toString() {
        if (statement != null) {
            return statement;
        } else {
            StringBuilder appendable = new StringBuilder();
            appendable.append("select ");
            appendable.append(origColumnName);
            if (aliasColumnName != null) {
                appendable.append(" as ").append(aliasColumnName);
            }
            return appendable.toString();
        }
    }

    public String getStatement() {
        return statement;
    }
}
